Search Results - "Sawant, H.S."

Fluctuation analysis of solar radio bursts associated with geoeffective X-class flares by Veronese, T.B., Rosa, R.R., Bolzan, M.J.A., Rocha Fernandes, F.C., Sawant, H.S., Karlicky`, M.

“…High temporal resolution solar observations in the decimetric range (1–3 GHz) can provide additional information on solar active regions dynamics and thus…”
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Coronal fast wave trains of the decimetric type IV radio event observed during the decay phase of the June 6, 2000 flare by Mészárosová, H., Sawant, H.S., Cecatto, J.R., Rybák, J., Karlický, M., Fernandes, F.C.R., de Andrade, M.C., Jiřička, K.

“…The 22 min long decimetric type IV radio event observed during the decay phase of the June 6, 2000 flare simultaneously by the Brazilian Solar Spectroscope…”
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Gradient pattern analysis of short solar radio bursts by Rosa, R.R., Karlický, M., Veronese, T.B., Vijaykumar, N.L., Sawant, H.S., Borgazzi, A.I., Dantas, M.S., Barbosa, E.B.M., Sych, R.A., Mendes, O.

“…We analyze the weak component of the localized temporal pattern variability of 3 GHz solar burst observed by the Ondrejov radiospectrograph. A complex, short…”
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Highlights of the Brazilian Solar Spectroscope by Sawant, H.S., Cecatto, J.R., Mészárosová, H., Faria, C., Fernandes, F.C.R., Karlický, M., de Andrade, M.C.

“…The digital, decimetric (950–2500 MHz) Brazilian Solar Spectroscope (BSS, Sawant, H.S., Subramanian, K.R., Faria, C., et al. Brazilian Solar Spectroscope…”
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Spectral and temporal properties of narrowband dm-spikes and broadband pulses in the August 5, 2003 flare by Sych, R.A., Sawant, H.S., Karlický, M., Mészárosová, H.

“…On August 5, 2003 the Ondřejov radiospectrograph and the Brazilian Solar Spectrograph recorded simultaneously the narrowband dm-spikes superimposed on…”
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Brazilian Decimetre Array (Phase-1): Initial solar observations by Ramesh, R., Sawant, H.S., Cecatto, J.R., Faria, C., Fernandes, F.C.R., Kathiravan, C., Suryanarayana, G.S.

“…An East–West one-dimensional radio interferometer array consisting of 5 parabolic dish antennas has been set-up at Cachoeira Paulista, Brazil (Longitude:…”
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High resolution studies of intermediatedrift bursts by Fernandes, F.C.R., Krishan, V., Andrade, M.C., Cecatto, J.R., Freitas, D.C., Sawant, H.S.

“…We report high resolution observations of the Intermediate Drift (IMD) bursts in decimetric band ( ν = 950 – 2650 MHz). With a time resolution of 20 – 50 ms…”
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Harmonically related decimetric fine structures by Sawant, H.S., Fernandes, F.C.R., Karlický, M., Mészárosová, H., Krishan, V., Cecatto, J.R., Madsen, F.R.H., Andrade, M.C.

“…We report rare events, above 1000 MHz, in which emission at the fundamental and at second harmonic frequencies show nearly identical fine structures. These…”
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Radio emission observed in decimetric waves associated with the onset of CMEs by Cecatto, J.R., Soares, A.C., Fernandes, F.C.R., Madsen, F.R.H., Andrade, M.C., Sawant, H.S.

“…Since the first observations by Skylab and SMM satellites coronal mass ejections (CME) have been more and more investigated. However, until now their origin…”
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Hard X-ray and high-frequency decimetric radio observations of the 4 April 2002 solar flare by Kane, S.R., Sawant, H.S., Cecatto, J.R., Andrade, M.C., Fernandes, F.C.R., Karlicky, M., Meszarosova, H.

“…Hard X-ray and high frequency decimetric type III radio bursts have been observed in association with the soft X-raysolar flare (GOES class M 6.1) on 4 April…”
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High resolution time profile of decimetric type-III bursts by Cecatto, J.R., Sawant, H.S., Fernandes, F.C.R., Krishan, V., Neri, J.A.C.F., Moraes Filho, J.C.

“…Type-III bursts are signatures of the electron beams accelerated during the solar flares, their observation and investigation provide information of the…”
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Decimetric dot-like structures by Sawant, H.S., Fernandes, F.C.R., Cecatto, J.R., Vats, H.O., Neri, J.A.C.F., Portezani, V.A., Martinon, A.R.F., Karlický, M., Jiřička, K., Mészárosová, H.

“…Various types of fine structures have been observed by the Brazilian Solar Spectroscope (BSS) in the frequency range of (1000 – 2000) MHz, since its regular…”
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Characterization of local self-similarity and criticality in the solar active regions by Rosa, R.R., Vats, H.O., Ramos, F.M., Zanandrea, A., Rodrigues Neto, C., Fernandes, F.C.R., Bolzan, M.J.A., Rempel, E.L., Brito, R.C., Vijaykumar, N.L., Sawant, H.S.

“…From solar radio burst data we computed wavelet transforms and frequency distribution for investigation of self-similar temporal variability and power-laws, as…”
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A low cost steerable radio-telescope by Sawant, H.S., Neri, J.A.C.F., Fernandes, F.C.R., Cecatto, J.R., Sankararaman, M.R., Faria, C., Stephany, S., Rosa, R.R., Andrade, M.C., Alonso, E.M.B., Lüdke, E., Subramanian, K.R., Ramesh, R., Sundararajan, M.S., Ananthakrishnan, S., Swarup, G., Boas, J.W.V., Botti, L.C.L., Moron, C.E., Saito, J.H.

“…We present the technical characteristics of a low-cost radio telescope for solar/non solar observations at decimetric (1200–1700 MHz) and centimetric (2700 and…”
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Investigations of the acceleration region of energetic electrons associated with decimetric type III and X-ray bursts by Fernandes, F.C.R., Sawant, H.S., Meléndez, J.L., Benz, A.O., Kane, S.R.

“…Preliminary results of the association between type III decimetric bursts, mainly having center frequency above 1000 MHz and recorded by Phoenix radio…”
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Brazilian Decimetric Array by Sawant, H.S., Subramanian, K.R., Lüdke, E., Sobral, J.H.A., Swarup, G., Fernandes, F.C.R., Rosa, R.R., Gonzalez, W.D., Cecatto, J.R.

“…A radio heliograph operating in the frequency range of 1200–1700 MHz is planned by INPE, Brazil, for investigations of time evolution of active regions, which…”
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On the association of eruptive prominences, coronal holes and current sheets with the coronal mass ejections by Srivastava, N., Gonzalez, W.D., Sawant, H.S.

“…In this paper, a study of the coronal mass ejections (CMEs) observed by Solar Maximum Mission satellite (SMM) during the period March – September, 1980, is…”
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Phenomenological dynamics of coronal loops using a neural network approach by Rosa, R.R., Sawant, H.S., Cecatto, J.R., Rodrigues Neto, C., Lopes, V.C.A., Subramanian, K.R., Fernandes, F.C.R., Saito, J.H., Moron, C.E., Mucheroni, M.L., Furuya, N., Mascarenhas, N.

“…The objective of this study is to simulate the X-ray 2D-coronal dynamics using an artificial neural network — multilayer backpropagation algorithm with inputs…”
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Image morphing applied to 3D reconstruction of coronal loops by Faria, L.N., Mascarenhas, N.D.A., Moron, C.E., Rosa, R.R., Sawant, H.S.

“…We present a new approach for 3D reconstruction of X-ray tomographic images of a magnetic structure, called coronal loop, observed on the solar atmosphere by…”
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Decimetric slow drift split pair by Fernandes, F.C.R, Sawant, H.S, Zheleznyakov, V.V

“…We report examples of the type III bursts and a patch like emission exhibiting split in frequency observed for the first time. This burst was observed over a…”
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